So, recently my old GPU died and I've bought a new one which happens to be the GTX 970. I did a clean install of the latest drivers so I don't think they are the issue here. What happens is this:
The game loads and functions normally in Fullscreen mode, but as soon as I try to change it to Windowed (Fullscreen) the screen goes black until the confirmation window runs out of time and then it returns to Fullscreen mode which works perfectly. That is issue #1.
Whenever I exit the game, either by using the Exit Game button or Alt+F4 or ending the task in Task Manager, my screen goes black, I can see the cursor and move it around, but that's it. Nothing, I repeat, nothing seems to help except for restarting the PC.
Here's my setup, in case that's important:
CPU: i5-4670K @ 4.3 GHz
GPU: Asus STRIX GTX 970 4GB DirectCU II OC
RAM: 8GB G.Skill RipjawsX 1.33 GHz
Has anyone had those issues and perhaps found a working solution? I'd appreciate any suggestions.